| 22:50 PST |  Clear | -15°C / 5°F | -17°C / 1°F | 85% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 100650Z AUTO 00000KT 10SM CLR M15/M17 A3000 RMK AO2 |
| 22:30 PST |  Clear Fog And Mist | -15°C / 5°F | -17°C / 1°F | 85% | 1016 mb (30 in) | Calm | - | 1 1/4SM |
| | KTRK 100630Z AUTO 00000KT 1 1/4SM BR CLR M15/M17 A3000 RMK AO2 |
| 22:10 PST |  Clear | -16°C / 3°F | -18°C / 0°F | 85% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 100610Z AUTO 00000KT 10SM CLR M16/M18 A3001 RMK AO2 |
| 21:50 PST |  Obscured Fog And Mist | -15°C / 5°F | -17°C / 1°F | 85% | 1016 mb (30 in) | Calm | - | 3/4SM |
| | KTRK 100550Z AUTO 00000KT 3/4SM BR VV005 M15/M17 A3001 RMK AO2 |
| 21:30 PST |  Clear Fog And Mist | -15°C / 5°F | -17°C / 1°F | 85% | 1016 mb (30 in) | Calm | - | 1 3/4SM |
| | KTRK 100530Z AUTO 00000KT 1 3/4SM BR CLR M15/M17 A3000 RMK AO2 |
| 21:10 PST |  Obscured Fog And Mist | -14°C / 7°F | -17°C / 1°F | 78% | 1016 mb (30 in) | Calm | - | 3/4SM |
| | KTRK 100510Z AUTO 00000KT 3/4SM BR VV005 M14/M17 A3000 RMK AO2 |
| 20:50 PST |  Obscured Fog | -16°C / 3°F | -18°C / 0°F | 85% | 1016 mb (30 in) | Calm | - | 1/4SM |
| | KTRK 100450Z AUTO 00000KT 1/4SM FZFG VV002 M16/M18 A3000 RMK AO2 |
| 20:30 PST |  Obscured Fog | -15°C / 5°F | -18°C / 0°F | 78% | 1016 mb (30 in) | Calm | - | 1/4SM |
| | KTRK 100430Z AUTO 00000KT 1/4SM FZFG VV002 M15/M18 A2999 RMK AO2 |
| 20:10 PST |  Obscured Fog And Mist | -15°C / 5°F | -18°C / 0°F | 78% | 1016 mb (30 in) | Calm | - | 3/4SM |
| | KTRK 100410Z AUTO 00000KT 3/4SM BR VV005 M15/M18 A2999 RMK AO2 |
| 19:50 PST |  Obscured Fog | -12°C / 10°F | -14°C / 7°F | 85% | 1016 mb (30 in) | Calm | - | 1/2SM |
| | KTRK 100350Z AUTO 00000KT 1/2SM FZFG VV005 M12/M14 A2999 RMK AO2 |
| 19:30 PST |  Clear | -12°C / 10°F | -13°C / 9°F | 92% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KTRK 100330Z AUTO 00000KT 10SM CLR M12/M13 A2998 RMK AO2 |
| 19:10 PST |  Obscured Fog | -14°C / 7°F | -16°C / 3°F | 85% | 1015 mb (29.97 in) | Calm | - | 1/2SM |
| | KTRK 100310Z AUTO 00000KT 1/2SM FZFG VV005 M14/M16 A2998 RMK AO2 |
| 18:50 PST |  Obscured Fog | -12°C / 10°F | -14°C / 7°F | 85% | 1015 mb (29.97 in) | Calm | - | 1/2SM |
| | KTRK 100250Z AUTO 00000KT 1/2SM FZFG VV005 M12/M14 A2997 RMK AO2 |
| 18:30 PST |  Fog And Mist | -12°C / 10°F | -13°C / 9°F | 92% | 1015 mb (29.97 in) | Calm | - | 2 1/2SM |
| | KTRK 100230Z AUTO 00000KT 2 1/2SM BR M12/M13 A2996 RMK AO2 |
| 18:10 PST |  Obscured Fog And Mist | -12°C / 10°F | -13°C / 9°F | 92% | 1015 mb (29.97 in) | Calm | - | 3/4SM |
| | KTRK 100210Z AUTO 00000KT 3/4SM BR VV005 M12/M13 A2996 RMK AO2 |
| 17:50 PST |  Obscured Light Snow | -11°C / 12°F | -12°C / 10°F | 92% | 1014 mb (29.94 in) | Calm | - | 3/4SM |
| | KTRK 100150Z AUTO 00000KT 3/4SM -SN VV005 M11/M12 A2995 RMK AO2 VSBY 1/4V5 |
| 17:30 PST |  Clear Light Snow | -10°C / 14°F | -12°C / 10°F | 85% | 1014 mb (29.94 in) | S 6 kph (S 3.5 mph) | - | 10SM |
| | KTRK 100130Z AUTO 17003KT 10SM -SN CLR M10/M12 A2995 RMK AO2 |
| 17:10 PST |  Clear Light Snow | -10°C / 14°F | -12°C / 10°F | 85% | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KTRK 100110Z AUTO 00000KT 10SM -SN CLR M10/M12 A2995 RMK AO2 |
| 16:45 PST |  Clear | -9°C / 16°F | -12°C / 10°F | 79% | 1014 mb (29.94 in) | Calm | - | 10SM |
| | KTRK 100045Z 00000KT 10SM SKC M09/M12 A2995 RMK NOSPECI LAST |
| 15:55 PST |  Clear | -8°C / 18°F | -12°C / 10°F | 73% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KTRK 092355Z 00000KT 10SM SKC M08/M12 A2998 RMK NO SPECI 11070 |
| 14:55 PST |  Clear | -7°C / 19°F | -11°C / 12°F | 73% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KTRK 092255Z 00000KT 10SM SKC M07/M11 A2996 RMK NO SPECI |
| 13:55 PST |  Clear | -9°C / 16°F | -12°C / 10°F | 79% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KTRK 092155Z 00000KT 10SM SKC M09/M12 A2997 RMK NO SPECI |
| 12:55 PST |  Clear | -12°C / 10°F | -14°C / 7°F | 85% | 1015 mb (29.97 in) | Calm | - | 10SM |
| | KTRK 092055Z 00000KT 10SM SKC M12/M14 A2998 RMK NOSPECI |
| 11:55 PST |  Clear | -13°C / 9°F | -15°C / 5°F | 85% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 091955Z 00000KT 10SM SKC M13/M15 A2999 RMK NO SPECI |
| 10:55 PST |  Clear | -16°C / 3°F | -18°C / 0°F | 85% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KTRK 091855Z 00000KT 10SM SKC M16/M18 A3004 RMK NOSPECI |
| 09:55 PST |  Clear | -23°C / -9°F | -26°C / -15°F | 77% | 1018 mb (30.06 in) | Calm | - | 10SM |
| | KTRK 091755Z 00000KT 10SM SKC M23/M26 A3005 RMK NO SPECI |
| 08:55 PST |  Clear | -24°C / -11°F | -27°C / -17°F | 76% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KTRK 091655Z 00000KT 10SM SKC M24/M27 A3004 RMK NO SPECI |
| 07:55 PST |  Partly Cloudy | -25°C / -13°F | -28°C / -18°F | 76% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KTRK 091555Z 00000KT 10SM SCT001 M25/M28 A3002 RMK NOSPECI |
| 06:50 PST |  Partly Cloudy | -26°C / -15°F | -29°C / -20°F | 76% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KTRK 091450Z 00000KT 10SM SCT001 M26/M29 A3002 RMK/ NO SPECI FIRST 4/014 24MAX 1022 MIN1278 |
| 05:30 PST |  Clear | -25°C / -13°F | -29°C / -20°F | 69% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KTRK 091330Z AUTO 00000KT 10SM CLR M25/M29 A3003 RMK AO2 |
| 05:10 PST |  Clear | -24°C / -11°F | -27°C / -17°F | 76% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KTRK 091310Z AUTO 00000KT 10SM CLR M24/M27 A3003 RMK AO2 |
| 04:50 PST |  Clear | -24°C / -11°F | -28°C / -18°F | 70% | 1017 mb (30.03 in) | Calm | - | 10SM |
| | KTRK 091250Z AUTO 00000KT 10SM CLR M24/M28 A3003 RMK AO2 |
| 04:30 PST |  Partly Cloudy | -25°C / -13°F | -28°C / -18°F | 76% | 1017 mb (30.03 in) | S 6 kph (S 3.5 mph) | - | 7SM |
| | KTRK 091230Z AUTO 19003KT 7SM FEW002 M25/M28 A3003 RMK AO2 |
| 04:10 PST |  Mostly Cloudy Hazy | -25°C / -13°F | -29°C / -20°F | 69% | 1017 mb (30.03 in) | Calm | - | 1/4SM |
| | KTRK 091210Z AUTO 00000KT 1/4SM HZ BKN002 M25/M29 A3003 RMK AO2 |
| 03:50 PST |  Clear Hazy | -25°C / -13°F | -28°C / -18°F | 76% | 1017 mb (30.03 in) | Calm | - | 4SM |
| | KTRK 091150Z AUTO 00000KT 4SM HZ CLR M25/M28 A3002 RMK AO2 |
| 03:30 PST |  Clear | -23°C / -9°F | -25°C / -13°F | 84% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 091130Z AUTO 00000KT 10SM CLR M23/M25 A3001 RMK AO2 |
| 03:10 PST |  Clear | -24°C / -11°F | -27°C / -17°F | 76% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 091110Z AUTO 00000KT 10SM CLR M24/M27 A3001 RMK AO2 |
| 02:50 PST |  Clear | -22°C / -8°F | -25°C / -13°F | 77% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 091050Z AUTO 00000KT 10SM CLR M22/M25 A3001 RMK AO2 |
| 02:30 PST |  Clear | -24°C / -11°F | -28°C / -18°F | 70% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 091030Z AUTO 00000KT 10SM CLR M24/M28 A3001 RMK AO2 |
| 02:10 PST |  Clear | -25°C / -13°F | -29°C / -20°F | 69% | 1016 mb (30 in) | SE 6 kph (SE 3.5 mph) | - | 9SM |
| | KTRK 091010Z AUTO 12003KT 9SM CLR M25/M29 A3000 RMK AO2 |
| 01:50 PST |  Clear | -22°C / -8°F | -24°C / -11°F | 84% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 090950Z AUTO 00000KT 10SM CLR M22/M24 A3000 RMK AO2 |
| 01:30 PST |  Clear | -22°C / -8°F | -24°C / -11°F | 84% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 090930Z AUTO 00000KT 10SM CLR M22/M24 A3000 RMK AO2 |
| 01:10 PST |  Clear | -20°C / -4°F | -23°C / -9°F | 77% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 090910Z AUTO 00000KT 10SM CLR M20/M23 A3000 RMK AO2 |
| 00:50 PST |  Clear | -22°C / -8°F | -24°C / -11°F | 84% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 090850Z AUTO 00000KT 10SM CLR M22/M24 A3000 RMK AO2 |
| 00:30 PST |  Clear | -22°C / -8°F | -24°C / -11°F | 84% | 1016 mb (30 in) | Calm | - | 10SM |
| | KTRK 090830Z AUTO 00000KT 10SM CLR M22/M24 A3000 RMK AO2 |
| 00:10 PST |  Clear | -20°C / -4°F | -23°C / -9°F | 77% | 1016 mb (30 in) | Calm | - | 9SM |
| | KTRK 090810Z AUTO 00000KT 9SM CLR M20/M23 A3000 RMK AO2 |